Rio Amazon 500mg Acai Extract Vegetarian Capsules are super antioxidant stabilized at 10 percent polyphenols. Rich source of plants sterols, vitamins (B1, C, A and E) and minerals. The Acai (pronounced ah-sigh-ee) is the dark purple, nutrient-rich, fruit of a wild palm which grows abundantly in the rainforests of the Amazon. Acai is loaded with purple pigment anthocyanins, a particular flavonoid known for its antioxidant capacity and ability to minimise the damage to cells from free radicals. Available in 60 capsules.